Switching To The Standby Supervisor Engine - Cisco Catalyst 4500 Series Configuration Manual

Chapter 5 Configuring the Cisco IOS In-Service Software Upgrade Process
The following example shows the redundancy mode as RPR:
Switch# show redundancy states
Redundancy Mode (Operational) = RPR
Redundancy Mode (Configured)
Redundancy State
Maintenance Mode = Disabled
Communications = Up
client count = 39
client_notification_TMR = 240000 milliseconds

Switching to the Standby Supervisor Engine

This task describes how to switchover to the standby supervisor engine, which is running the new Cisco
IOS software image.
Perform this task at the active supervisor engine:
Command or Action
Step 1
Switch> enable
Step 2
Switch# issu runversion standby-slot
[standby-image-new]
Step 3
Switch# show issu state [detail]
Step 4
Switch# show redundancy [states]
This example shows how to cause a switchover to the former standby supervisor engine (slot 2), reset
the former active supervisor engine and reload it with the old image so it becomes the standby supervisor
engine:
Switch> enable
Switch# issu runversion 2 slavebootflash:new_image
This command will reload the Active unit.
OL-25340-01
my state = 13 -ACTIVE
peer state = 4 -STANDBY COLD
Mode = Duplex
Unit = Primary
Unit ID = 1
Manual Swact = enabled
keep_alive TMR = 9000 milliseconds
keep_alive count = 1
keep_alive threshold = 18
RF debug mask = 0x0
= Stateful Switchover
= RPR
Purpose
Enables privileged EXEC mode.
• Enter your password if prompted.
Forces a switchover from the active to the standby
supervisor engine and reloads the former active (current
standby) supervisor engines with the old image.
When you enter the issu runversion command, an SSO
switchover is performed, and NSF procedures are invoked if
configured.
Displays the state of the during the ISSU process. At this
point in the ISSU process, use this command to check that
a switchover occurs to slot 2.
Displays redundancy facility state information.
Proceed ? [confirm]
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
Performing the ISSU Process
5-21